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Worksheet.php in Loft Data Grids 7.2

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vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php
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<?php

/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2014 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    ##VERSION##, ##DATE##
 */

/**
 * PHPExcel_Worksheet
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Worksheet implements PHPExcel_IComparable {

  /* Break types */
  const BREAK_NONE = 0;
  const BREAK_ROW = 1;
  const BREAK_COLUMN = 2;

  /* Sheet state */
  const SHEETSTATE_VISIBLE = 'visible';
  const SHEETSTATE_HIDDEN = 'hidden';
  const SHEETSTATE_VERYHIDDEN = 'veryHidden';

  /**
   * Invalid characters in sheet title
   *
   * @var array
   */
  private static $_invalidCharacters = array(
    '*',
    ':',
    '/',
    '\\',
    '?',
    '[',
    ']',
  );

  /**
   * Parent spreadsheet
   *
   * @var PHPExcel
   */
  private $_parent;

  /**
   * Cacheable collection of cells
   *
   * @var PHPExcel_CachedObjectStorage_xxx
   */
  private $_cellCollection = null;

  /**
   * Collection of row dimensions
   *
   * @var PHPExcel_Worksheet_RowDimension[]
   */
  private $_rowDimensions = array();

  /**
   * Default row dimension
   *
   * @var PHPExcel_Worksheet_RowDimension
   */
  private $_defaultRowDimension = null;

  /**
   * Collection of column dimensions
   *
   * @var PHPExcel_Worksheet_ColumnDimension[]
   */
  private $_columnDimensions = array();

  /**
   * Default column dimension
   *
   * @var PHPExcel_Worksheet_ColumnDimension
   */
  private $_defaultColumnDimension = null;

  /**
   * Collection of drawings
   *
   * @var PHPExcel_Worksheet_BaseDrawing[]
   */
  private $_drawingCollection = null;

  /**
   * Collection of Chart objects
   *
   * @var PHPExcel_Chart[]
   */
  private $_chartCollection = array();

  /**
   * Worksheet title
   *
   * @var string
   */
  private $_title;

  /**
   * Sheet state
   *
   * @var string
   */
  private $_sheetState;

  /**
   * Page setup
   *
   * @var PHPExcel_Worksheet_PageSetup
   */
  private $_pageSetup;

  /**
   * Page margins
   *
   * @var PHPExcel_Worksheet_PageMargins
   */
  private $_pageMargins;

  /**
   * Page header/footer
   *
   * @var PHPExcel_Worksheet_HeaderFooter
   */
  private $_headerFooter;

  /**
   * Sheet view
   *
   * @var PHPExcel_Worksheet_SheetView
   */
  private $_sheetView;

  /**
   * Protection
   *
   * @var PHPExcel_Worksheet_Protection
   */
  private $_protection;

  /**
   * Collection of styles
   *
   * @var PHPExcel_Style[]
   */
  private $_styles = array();

  /**
   * Conditional styles. Indexed by cell coordinate, e.g. 'A1'
   *
   * @var array
   */
  private $_conditionalStylesCollection = array();

  /**
   * Is the current cell collection sorted already?
   *
   * @var boolean
   */
  private $_cellCollectionIsSorted = false;

  /**
   * Collection of breaks
   *
   * @var array
   */
  private $_breaks = array();

  /**
   * Collection of merged cell ranges
   *
   * @var array
   */
  private $_mergeCells = array();

  /**
   * Collection of protected cell ranges
   *
   * @var array
   */
  private $_protectedCells = array();

  /**
   * Autofilter Range and selection
   *
   * @var PHPExcel_Worksheet_AutoFilter
   */
  private $_autoFilter = NULL;

  /**
   * Freeze pane
   *
   * @var string
   */
  private $_freezePane = '';

  /**
   * Show gridlines?
   *
   * @var boolean
   */
  private $_showGridlines = true;

  /**
   * Print gridlines?
   *
   * @var boolean
   */
  private $_printGridlines = false;

  /**
   * Show row and column headers?
   *
   * @var boolean
   */
  private $_showRowColHeaders = true;

  /**
   * Show summary below? (Row/Column outline)
   *
   * @var boolean
   */
  private $_showSummaryBelow = true;

  /**
   * Show summary right? (Row/Column outline)
   *
   * @var boolean
   */
  private $_showSummaryRight = true;

  /**
   * Collection of comments
   *
   * @var PHPExcel_Comment[]
   */
  private $_comments = array();

  /**
   * Active cell. (Only one!)
   *
   * @var string
   */
  private $_activeCell = 'A1';

  /**
   * Selected cells
   *
   * @var string
   */
  private $_selectedCells = 'A1';

  /**
   * Cached highest column
   *
   * @var string
   */
  private $_cachedHighestColumn = 'A';

  /**
   * Cached highest row
   *
   * @var int
   */
  private $_cachedHighestRow = 1;

  /**
   * Right-to-left?
   *
   * @var boolean
   */
  private $_rightToLeft = false;

  /**
   * Hyperlinks. Indexed by cell coordinate, e.g. 'A1'
   *
   * @var array
   */
  private $_hyperlinkCollection = array();

  /**
   * Data validation objects. Indexed by cell coordinate, e.g. 'A1'
   *
   * @var array
   */
  private $_dataValidationCollection = array();

  /**
   * Tab color
   *
   * @var PHPExcel_Style_Color
   */
  private $_tabColor;

  /**
   * Dirty flag
   *
   * @var boolean
   */
  private $_dirty = true;

  /**
   * Hash
   *
   * @var string
   */
  private $_hash = null;

  /**
   * CodeName
   *
   * @var string
   */
  private $_codeName = null;

  /**
   * Create a new worksheet
   *
   * @param PHPExcel        $pParent
   * @param string        $pTitle
   */
  public function __construct(PHPExcel $pParent = null, $pTitle = 'Worksheet') {

    // Set parent and title
    $this->_parent = $pParent;
    $this
      ->setTitle($pTitle, FALSE);

    // setTitle can change $pTitle
    $this
      ->setCodeName($this
      ->getTitle());
    $this
      ->setSheetState(PHPExcel_Worksheet::SHEETSTATE_VISIBLE);
    $this->_cellCollection = PHPExcel_CachedObjectStorageFactory::getInstance($this);

    // Set page setup
    $this->_pageSetup = new PHPExcel_Worksheet_PageSetup();

    // Set page margins
    $this->_pageMargins = new PHPExcel_Worksheet_PageMargins();

    // Set page header/footer
    $this->_headerFooter = new PHPExcel_Worksheet_HeaderFooter();

    // Set sheet view
    $this->_sheetView = new PHPExcel_Worksheet_SheetView();

    // Drawing collection
    $this->_drawingCollection = new ArrayObject();

    // Chart collection
    $this->_chartCollection = new ArrayObject();

    // Protection
    $this->_protection = new PHPExcel_Worksheet_Protection();

    // Default row dimension
    $this->_defaultRowDimension = new PHPExcel_Worksheet_RowDimension(NULL);

    // Default column dimension
    $this->_defaultColumnDimension = new PHPExcel_Worksheet_ColumnDimension(NULL);
    $this->_autoFilter = new PHPExcel_Worksheet_AutoFilter(NULL, $this);
  }

  /**
   * Disconnect all cells from this PHPExcel_Worksheet object,
   *    typically so that the worksheet object can be unset
   *
   */
  public function disconnectCells() {
    if ($this->_cellCollection !== NULL) {
      $this->_cellCollection
        ->unsetWorksheetCells();
      $this->_cellCollection = NULL;
    }

    //    detach ourself from the workbook, so that it can then delete this worksheet successfully
    $this->_parent = null;
  }

  /**
   * Code to execute when this worksheet is unset()
   *
   */
  function __destruct() {
    PHPExcel_Calculation::getInstance($this->_parent)
      ->clearCalculationCacheForWorksheet($this->_title);
    $this
      ->disconnectCells();
  }

  /**
   * Return the cache controller for the cell collection
   *
   * @return PHPExcel_CachedObjectStorage_xxx
   */
  public function getCellCacheController() {
    return $this->_cellCollection;
  }

  //    function getCellCacheController()

  /**
   * Get array of invalid characters for sheet title
   *
   * @return array
   */
  public static function getInvalidCharacters() {
    return self::$_invalidCharacters;
  }

  /**
   * Check sheet code name for valid Excel syntax
   *
   * @param string $pValue The string to check
   * @return string The valid string
   * @throws Exception
   */
  private static function _checkSheetCodeName($pValue) {
    $CharCount = PHPExcel_Shared_String::CountCharacters($pValue);
    if ($CharCount == 0) {
      throw new PHPExcel_Exception('Sheet code name cannot be empty.');
    }

    // Some of the printable ASCII characters are invalid:  * : / \ ? [ ] and  first and last characters cannot be a "'"
    if (str_replace(self::$_invalidCharacters, '', $pValue) !== $pValue || PHPExcel_Shared_String::Substring($pValue, -1, 1) == '\'' || PHPExcel_Shared_String::Substring($pValue, 0, 1) == '\'') {
      throw new PHPExcel_Exception('Invalid character found in sheet code name');
    }

    // Maximum 31 characters allowed for sheet title
    if ($CharCount > 31) {
      throw new PHPExcel_Exception('Maximum 31 characters allowed in sheet code name.');
    }
    return $pValue;
  }

  /**
   * Check sheet title for valid Excel syntax
   *
   * @param string $pValue The string to check
   * @return string The valid string
   * @throws PHPExcel_Exception
   */
  private static function _checkSheetTitle($pValue) {

    // Some of the printable ASCII characters are invalid:  * : / \ ? [ ]
    if (str_replace(self::$_invalidCharacters, '', $pValue) !== $pValue) {
      throw new PHPExcel_Exception('Invalid character found in sheet title');
    }

    // Maximum 31 characters allowed for sheet title
    if (PHPExcel_Shared_String::CountCharacters($pValue) > 31) {
      throw new PHPExcel_Exception('Maximum 31 characters allowed in sheet title.');
    }
    return $pValue;
  }

  /**
   * Get collection of cells
   *
   * @param boolean $pSorted Also sort the cell collection?
   * @return PHPExcel_Cell[]
   */
  public function getCellCollection($pSorted = true) {
    if ($pSorted) {

      // Re-order cell collection
      return $this
        ->sortCellCollection();
    }
    if ($this->_cellCollection !== NULL) {
      return $this->_cellCollection
        ->getCellList();
    }
    return array();
  }

  /**
   * Sort collection of cells
   *
   * @return PHPExcel_Worksheet
   */
  public function sortCellCollection() {
    if ($this->_cellCollection !== NULL) {
      return $this->_cellCollection
        ->getSortedCellList();
    }
    return array();
  }

  /**
   * Get collection of row dimensions
   *
   * @return PHPExcel_Worksheet_RowDimension[]
   */
  public function getRowDimensions() {
    return $this->_rowDimensions;
  }

  /**
   * Get default row dimension
   *
   * @return PHPExcel_Worksheet_RowDimension
   */
  public function getDefaultRowDimension() {
    return $this->_defaultRowDimension;
  }

  /**
   * Get collection of column dimensions
   *
   * @return PHPExcel_Worksheet_ColumnDimension[]
   */
  public function getColumnDimensions() {
    return $this->_columnDimensions;
  }

  /**
   * Get default column dimension
   *
   * @return PHPExcel_Worksheet_ColumnDimension
   */
  public function getDefaultColumnDimension() {
    return $this->_defaultColumnDimension;
  }

  /**
   * Get collection of drawings
   *
   * @return PHPExcel_Worksheet_BaseDrawing[]
   */
  public function getDrawingCollection() {
    return $this->_drawingCollection;
  }

  /**
   * Get collection of charts
   *
   * @return PHPExcel_Chart[]
   */
  public function getChartCollection() {
    return $this->_chartCollection;
  }

  /**
   * Add chart
   *
   * @param PHPExcel_Chart $pChart
   * @param int|null $iChartIndex Index where chart should go (0,1,..., or null for last)
   * @return PHPExcel_Chart
   */
  public function addChart(PHPExcel_Chart $pChart = null, $iChartIndex = null) {
    $pChart
      ->setWorksheet($this);
    if (is_null($iChartIndex)) {
      $this->_chartCollection[] = $pChart;
    }
    else {

      // Insert the chart at the requested index
      array_splice($this->_chartCollection, $iChartIndex, 0, array(
        $pChart,
      ));
    }
    return $pChart;
  }

  /**
   * Return the count of charts on this worksheet
   *
   * @return int        The number of charts
   */
  public function getChartCount() {
    return count($this->_chartCollection);
  }

  /**
   * Get a chart by its index position
   *
   * @param string $index Chart index position
   * @return false|PHPExcel_Chart
   * @throws PHPExcel_Exception
   */
  public function getChartByIndex($index = null) {
    $chartCount = count($this->_chartCollection);
    if ($chartCount == 0) {
      return false;
    }
    if (is_null($index)) {
      $index = --$chartCount;
    }
    if (!isset($this->_chartCollection[$index])) {
      return false;
    }
    return $this->_chartCollection[$index];
  }

  /**
   * Return an array of the names of charts on this worksheet
   *
   * @return string[] The names of charts
   * @throws PHPExcel_Exception
   */
  public function getChartNames() {
    $chartNames = array();
    foreach ($this->_chartCollection as $chart) {
      $chartNames[] = $chart
        ->getName();
    }
    return $chartNames;
  }

  /**
   * Get a chart by name
   *
   * @param string $chartName Chart name
   * @return false|PHPExcel_Chart
   * @throws PHPExcel_Exception
   */
  public function getChartByName($chartName = '') {
    $chartCount = count($this->_chartCollection);
    if ($chartCount == 0) {
      return false;
    }
    foreach ($this->_chartCollection as $index => $chart) {
      if ($chart
        ->getName() == $chartName) {
        return $this->_chartCollection[$index];
      }
    }
    return false;
  }

  /**
   * Refresh column dimensions
   *
   * @return PHPExcel_Worksheet
   */
  public function refreshColumnDimensions() {
    $currentColumnDimensions = $this
      ->getColumnDimensions();
    $newColumnDimensions = array();
    foreach ($currentColumnDimensions as $objColumnDimension) {
      $newColumnDimensions[$objColumnDimension
        ->getColumnIndex()] = $objColumnDimension;
    }
    $this->_columnDimensions = $newColumnDimensions;
    return $this;
  }

  /**
   * Refresh row dimensions
   *
   * @return PHPExcel_Worksheet
   */
  public function refreshRowDimensions() {
    $currentRowDimensions = $this
      ->getRowDimensions();
    $newRowDimensions = array();
    foreach ($currentRowDimensions as $objRowDimension) {
      $newRowDimensions[$objRowDimension
        ->getRowIndex()] = $objRowDimension;
    }
    $this->_rowDimensions = $newRowDimensions;
    return $this;
  }

  /**
   * Calculate worksheet dimension
   *
   * @return string  String containing the dimension of this worksheet
   */
  public function calculateWorksheetDimension() {

    // Return
    return 'A1' . ':' . $this
      ->getHighestColumn() . $this
      ->getHighestRow();
  }

  /**
   * Calculate worksheet data dimension
   *
   * @return string  String containing the dimension of this worksheet that actually contain data
   */
  public function calculateWorksheetDataDimension() {

    // Return
    return 'A1' . ':' . $this
      ->getHighestDataColumn() . $this
      ->getHighestDataRow();
  }

  /**
   * Calculate widths for auto-size columns
   *
   * @param  boolean  $calculateMergeCells  Calculate merge cell width
   * @return PHPExcel_Worksheet;
   */
  public function calculateColumnWidths($calculateMergeCells = false) {

    // initialize $autoSizes array
    $autoSizes = array();
    foreach ($this
      ->getColumnDimensions() as $colDimension) {
      if ($colDimension
        ->getAutoSize()) {
        $autoSizes[$colDimension
          ->getColumnIndex()] = -1;
      }
    }

    // There is only something to do if there are some auto-size columns
    if (!empty($autoSizes)) {

      // build list of cells references that participate in a merge
      $isMergeCell = array();
      foreach ($this
        ->getMergeCells() as $cells) {
        foreach (PHPExcel_Cell::extractAllCellReferencesInRange($cells) as $cellReference) {
          $isMergeCell[$cellReference] = true;
        }
      }

      // loop through all cells in the worksheet
      foreach ($this
        ->getCellCollection(false) as $cellID) {
        $cell = $this
          ->getCell($cellID);
        if (isset($autoSizes[$this->_cellCollection
          ->getCurrentColumn()])) {

          // Determine width if cell does not participate in a merge
          if (!isset($isMergeCell[$this->_cellCollection
            ->getCurrentAddress()])) {

            // Calculated value
            // To formatted string
            $cellValue = PHPExcel_Style_NumberFormat::toFormattedString($cell
              ->getCalculatedValue(), $this
              ->getParent()
              ->getCellXfByIndex($cell
              ->getXfIndex())
              ->getNumberFormat()
              ->getFormatCode());
            $autoSizes[$this->_cellCollection
              ->getCurrentColumn()] = max((double) $autoSizes[$this->_cellCollection
              ->getCurrentColumn()], (double) PHPExcel_Shared_Font::calculateColumnWidth($this
              ->getParent()
              ->getCellXfByIndex($cell
              ->getXfIndex())
              ->getFont(), $cellValue, $this
              ->getParent()
              ->getCellXfByIndex($cell
              ->getXfIndex())
              ->getAlignment()
              ->getTextRotation(), $this
              ->getDefaultStyle()
              ->getFont()));
          }
        }
      }

      // adjust column widths
      foreach ($autoSizes as $columnIndex => $width) {
        if ($width == -1) {
          $width = $this
            ->getDefaultColumnDimension()
            ->getWidth();
        }
        $this
          ->getColumnDimension($columnIndex)
          ->setWidth($width);
      }
    }
    return $this;
  }

  /**
   * Get parent
   *
   * @return PHPExcel
   */
  public function getParent() {
    return $this->_parent;
  }

  /**
   * Re-bind parent
   *
   * @param PHPExcel $parent
   * @return PHPExcel_Worksheet
   */
  public function rebindParent(PHPExcel $parent) {
    if ($this->_parent !== null) {
      $namedRanges = $this->_parent
        ->getNamedRanges();
      foreach ($namedRanges as $namedRange) {
        $parent
          ->addNamedRange($namedRange);
      }
      $this->_parent
        ->removeSheetByIndex($this->_parent
        ->getIndex($this));
    }
    $this->_parent = $parent;
    return $this;
  }

  /**
   * Get title
   *
   * @return string
   */
  public function getTitle() {
    return $this->_title;
  }

  /**
   * Set title
   *
   * @param string $pValue String containing the dimension of this worksheet
   * @param string $updateFormulaCellReferences boolean Flag indicating whether cell references in formulae should
   *        	be updated to reflect the new sheet name.
   *          This should be left as the default true, unless you are
   *          certain that no formula cells on any worksheet contain
   *          references to this worksheet
   * @return PHPExcel_Worksheet
   */
  public function setTitle($pValue = 'Worksheet', $updateFormulaCellReferences = true) {

    // Is this a 'rename' or not?
    if ($this
      ->getTitle() == $pValue) {
      return $this;
    }

    // Syntax check
    self::_checkSheetTitle($pValue);

    // Old title
    $oldTitle = $this
      ->getTitle();
    if ($this->_parent) {

      // Is there already such sheet name?
      if ($this->_parent
        ->sheetNameExists($pValue)) {

        // Use name, but append with lowest possible integer
        if (PHPExcel_Shared_String::CountCharacters($pValue) > 29) {
          $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 29);
        }
        $i = 1;
        while ($this->_parent
          ->sheetNameExists($pValue . ' ' . $i)) {
          ++$i;
          if ($i == 10) {
            if (PHPExcel_Shared_String::CountCharacters($pValue) > 28) {
              $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 28);
            }
          }
          elseif ($i == 100) {
            if (PHPExcel_Shared_String::CountCharacters($pValue) > 27) {
              $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 27);
            }
          }
        }
        $altTitle = $pValue . ' ' . $i;
        return $this
          ->setTitle($altTitle, $updateFormulaCellReferences);
      }
    }

    // Set title
    $this->_title = $pValue;
    $this->_dirty = true;
    if ($this->_parent) {

      // New title
      $newTitle = $this
        ->getTitle();
      PHPExcel_Calculation::getInstance($this->_parent)
        ->renameCalculationCacheForWorksheet($oldTitle, $newTitle);
      if ($updateFormulaCellReferences) {
        PHPExcel_ReferenceHelper::getInstance()
          ->updateNamedFormulas($this->_parent, $oldTitle, $newTitle);
      }
    }
    return $this;
  }

  /**
   * Get sheet state
   *
   * @return string Sheet state (visible, hidden, veryHidden)
   */
  public function getSheetState() {
    return $this->_sheetState;
  }

  /**
   * Set sheet state
   *
   * @param string $value Sheet state (visible, hidden, veryHidden)
   * @return PHPExcel_Worksheet
   */
  public function setSheetState($value = PHPExcel_Worksheet::SHEETSTATE_VISIBLE) {
    $this->_sheetState = $value;
    return $this;
  }

  /**
   * Get page setup
   *
   * @return PHPExcel_Worksheet_PageSetup
   */
  public function getPageSetup() {
    return $this->_pageSetup;
  }

  /**
   * Set page setup
   *
   * @param PHPExcel_Worksheet_PageSetup    $pValue
   * @return PHPExcel_Worksheet
   */
  public function setPageSetup(PHPExcel_Worksheet_PageSetup $pValue) {
    $this->_pageSetup = $pValue;
    return $this;
  }

  /**
   * Get page margins
   *
   * @return PHPExcel_Worksheet_PageMargins
   */
  public function getPageMargins() {
    return $this->_pageMargins;
  }

  /**
   * Set page margins
   *
   * @param PHPExcel_Worksheet_PageMargins    $pValue
   * @return PHPExcel_Worksheet
   */
  public function setPageMargins(PHPExcel_Worksheet_PageMargins $pValue) {
    $this->_pageMargins = $pValue;
    return $this;
  }

  /**
   * Get page header/footer
   *
   * @return PHPExcel_Worksheet_HeaderFooter
   */
  public function getHeaderFooter() {
    return $this->_headerFooter;
  }

  /**
   * Set page header/footer
   *
   * @param PHPExcel_Worksheet_HeaderFooter    $pValue
   * @return PHPExcel_Worksheet
   */
  public function setHeaderFooter(PHPExcel_Worksheet_HeaderFooter $pValue) {
    $this->_headerFooter = $pValue;
    return $this;
  }

  /**
   * Get sheet view
   *
   * @return PHPExcel_Worksheet_SheetView
   */
  public function getSheetView() {
    return $this->_sheetView;
  }

  /**
   * Set sheet view
   *
   * @param PHPExcel_Worksheet_SheetView    $pValue
   * @return PHPExcel_Worksheet
   */
  public function setSheetView(PHPExcel_Worksheet_SheetView $pValue) {
    $this->_sheetView = $pValue;
    return $this;
  }

  /**
   * Get Protection
   *
   * @return PHPExcel_Worksheet_Protection
   */
  public function getProtection() {
    return $this->_protection;
  }

  /**
   * Set Protection
   *
   * @param PHPExcel_Worksheet_Protection    $pValue
   * @return PHPExcel_Worksheet
   */
  public function setProtection(PHPExcel_Worksheet_Protection $pValue) {
    $this->_protection = $pValue;
    $this->_dirty = true;
    return $this;
  }

  /**
   * Get highest worksheet column
   *
   * @param   string     $row        Return the data highest column for the specified row,
   *                                     or the highest column of any row if no row number is passed
   * @return string Highest column name
   */
  public function getHighestColumn($row = null) {
    if ($row == null) {
      return $this->_cachedHighestColumn;
    }
    return $this
      ->getHighestDataColumn($row);
  }

  /**
   * Get highest worksheet column that contains data
   *
   * @param   string     $row        Return the highest data column for the specified row,
   *                                     or the highest data column of any row if no row number is passed
   * @return string Highest column name that contains data
   */
  public function getHighestDataColumn($row = null) {
    return $this->_cellCollection
      ->getHighestColumn($row);
  }

  /**
   * Get highest worksheet row
   *
   * @param   string     $column     Return the highest data row for the specified column,
   *                                     or the highest row of any column if no column letter is passed
   * @return int Highest row number
   */
  public function getHighestRow($column = null) {
    if ($column == null) {
      return $this->_cachedHighestRow;
    }
    return $this
      ->getHighestDataRow($column);
  }

  /**
   * Get highest worksheet row that contains data
   *
   * @param   string     $column     Return the highest data row for the specified column,
   *                                     or the highest data row of any column if no column letter is passed
   * @return string Highest row number that contains data
   */
  public function getHighestDataRow($column = null) {
    return $this->_cellCollection
      ->getHighestRow($column);
  }

  /**
   * Get highest worksheet column and highest row that have cell records
   *
   * @return array Highest column name and highest row number
   */
  public function getHighestRowAndColumn() {
    return $this->_cellCollection
      ->getHighestRowAndColumn();
  }

  /**
   * Set a cell value
   *
   * @param string $pCoordinate Coordinate of the cell
   * @param mixed $pValue Value of the cell
   * @param bool $returnCell   Return the worksheet (false, default) or the cell (true)
   * @return PHPExcel_Worksheet|PHPExcel_Cell    Depending on the last parameter being specified
   */
  public function setCellValue($pCoordinate = 'A1', $pValue = null, $returnCell = false) {
    $cell = $this
      ->getCell(strtoupper($pCoordinate))
      ->setValue($pValue);
    return $returnCell ? $cell : $this;
  }

  /**
   * Set a cell value by using numeric cell coordinates
   *
   * @param string $pColumn Numeric column coordinate of the cell (A = 0)
   * @param string $pRow Numeric row coordinate of the cell
   * @param mixed $pValue Value of the cell
   * @param bool $returnCell Return the worksheet (false, default) or the cell (true)
   * @return PHPExcel_Worksheet|PHPExcel_Cell    Depending on the last parameter being specified
   */
  public function setCellValueByColumnAndRow($pColumn = 0, $pRow = 1, $pValue = null, $returnCell = false) {
    $cell = $this
      ->getCellByColumnAndRow($pColumn, $pRow)
      ->setValue($pValue);
    return $returnCell ? $cell : $this;
  }

  /**
   * Set a cell value
   *
   * @param string $pCoordinate Coordinate of the cell
   * @param mixed  $pValue Value of the cell
   * @param string $pDataType Explicit data type
   * @param bool $returnCell Return the worksheet (false, default) or the cell (true)
   * @return PHPExcel_Worksheet|PHPExcel_Cell    Depending on the last parameter being specified
   */
  public function setCellValueExplicit($pCoordinate = 'A1', $pValue = null, $pDataType = PHPExcel_Cell_DataType::TYPE_STRING, $returnCell = false) {

    // Set value
    $cell = $this
      ->getCell(strtoupper($pCoordinate))
      ->setValueExplicit($pValue, $pDataType);
    return $returnCell ? $cell : $this;
  }

  /**
   * Set a cell value by using numeric cell coordinates
   *
   * @param string $pColumn Numeric column coordinate of the cell
   * @param string $pRow Numeric row coordinate of the cell
   * @param mixed $pValue Value of the cell
   * @param string $pDataType Explicit data type
   * @param bool $returnCell Return the worksheet (false, default) or the cell (true)
   * @return PHPExcel_Worksheet|PHPExcel_Cell    Depending on the last parameter being specified
   */
  public function setCellValueExplicitByColumnAndRow($pColumn = 0, $pRow = 1, $pValue = null, $pDataType = PHPExcel_Cell_DataType::TYPE_STRING, $returnCell = false) {
    $cell = $this
      ->getCellByColumnAndRow($pColumn, $pRow)
      ->setValueExplicit($pValue, $pDataType);
    return $returnCell ? $cell : $this;
  }

  /**
   * Get cell at a specific coordinate
   *
   * @param string $pCoordinate    Coordinate of the cell
   * @throws PHPExcel_Exception
   * @return PHPExcel_Cell Cell that was found
   */
  public function getCell($pCoordinate = 'A1') {
    $pCoordinate = strtoupper($pCoordinate);

    // Check cell collection
    if ($this->_cellCollection
      ->isDataSet($pCoordinate)) {
      return $this->_cellCollection
        ->getCacheData($pCoordinate);
    }

    // Worksheet reference?
    if (strpos($pCoordinate, '!') !== false) {
      $worksheetReference = PHPExcel_Worksheet::extractSheetTitle($pCoordinate, true);
      return $this->_parent
        ->getSheetByName($worksheetReference[0])
        ->getCell($worksheetReference[1]);
    }

    // Named range?
    if (!preg_match('/^' . PHPExcel_Calculation::CALCULATION_REGEXP_CELLREF . '$/i', $pCoordinate, $matches) && preg_match('/^' . PHPExcel_Calculation::CALCULATION_REGEXP_NAMEDRANGE . '$/i', $pCoordinate, $matches)) {
      $namedRange = PHPExcel_NamedRange::resolveRange($pCoordinate, $this);
      if ($namedRange !== NULL) {
        $pCoordinate = $namedRange
          ->getRange();
        return $namedRange
          ->getWorksheet()
          ->getCell($pCoordinate);
      }
    }

    // Uppercase coordinate
    $pCoordinate = strtoupper($pCoordinate);
    if (strpos($pCoordinate, ':') !== false || strpos($pCoordinate, ',') !== false) {
      throw new PHPExcel_Exception('Cell coordinate can not be a range of cells.');
    }
    elseif (strpos($pCoordinate, '$') !== false) {
      throw new PHPExcel_Exception('Cell coordinate must not be absolute.');
    }

    // Create new cell object
    return $this
      ->_createNewCell($pCoordinate);
  }

  /**
   * Get cell at a specific coordinate by using numeric cell coordinates
   *
   * @param  string $pColumn Numeric column coordinate of the cell
   * @param string $pRow Numeric row coordinate of the cell
   * @return PHPExcel_Cell Cell that was found
   */
  public function getCellByColumnAndRow($pColumn = 0, $pRow = 1) {
    $columnLetter = PHPExcel_Cell::stringFromColumnIndex($pColumn);
    $coordinate = $columnLetter . $pRow;
    if ($this->_cellCollection
      ->isDataSet($coordinate)) {
      return $this->_cellCollection
        ->getCacheData($coordinate);
    }
    return $this
      ->_createNewCell($coordinate);
  }

  /**
   * Create a new cell at the specified coordinate
   *
   * @param string $pCoordinate    Coordinate of the cell
   * @return PHPExcel_Cell Cell that was created
   */
  private function _createNewCell($pCoordinate) {
    $cell = $this->_cellCollection
      ->addCacheData($pCoordinate, new PHPExcel_Cell(NULL, PHPExcel_Cell_DataType::TYPE_NULL, $this));
    $this->_cellCollectionIsSorted = false;

    // Coordinates
    $aCoordinates = PHPExcel_Cell::coordinateFromString($pCoordinate);
    if (PHPExcel_Cell::columnIndexFromString($this->_cachedHighestColumn) < PHPExcel_Cell::columnIndexFromString($aCoordinates[0])) {
      $this->_cachedHighestColumn = $aCoordinates[0];
    }
    $this->_cachedHighestRow = max($this->_cachedHighestRow, $aCoordinates[1]);

    // Cell needs appropriate xfIndex from dimensions records
    //    but don't create dimension records if they don't already exist
    $rowDimension = $this
      ->getRowDimension($aCoordinates[1], FALSE);
    $columnDimension = $this
      ->getColumnDimension($aCoordinates[0], FALSE);
    if ($rowDimension !== NULL && $rowDimension
      ->getXfIndex() > 0) {

      // then there is a row dimension with explicit style, assign it to the cell
      $cell
        ->setXfIndex($rowDimension
        ->getXfIndex());
    }
    elseif ($columnDimension !== NULL && $columnDimension
      ->getXfIndex() > 0) {

      // then there is a column dimension, assign it to the cell
      $cell
        ->setXfIndex($columnDimension
        ->getXfIndex());
    }
    return $cell;
  }

  /**
   * Does the cell at a specific coordinate exist?
   *
   * @param string $pCoordinate  Coordinate of the cell
   * @throws PHPExcel_Exception
   * @return boolean
   */
  public function cellExists($pCoordinate = 'A1') {

    // Worksheet reference?
    if (strpos($pCoordinate, '!') !== false) {
      $worksheetReference = PHPExcel_Worksheet::extractSheetTitle($pCoordinate, true);
      return $this->_parent
        ->getSheetByName($worksheetReference[0])
        ->cellExists(strtoupper($worksheetReference[1]));
    }

    // Named range?
    if (!preg_match('/^' . PHPExcel_Calculation::CALCULATION_REGEXP_CELLREF . '$/i', $pCoordinate, $matches) && preg_match('/^' . PHPExcel_Calculation::CALCULATION_REGEXP_NAMEDRANGE . '$/i', $pCoordinate, $matches)) {
      $namedRange = PHPExcel_NamedRange::resolveRange($pCoordinate, $this);
      if ($namedRange !== NULL) {
        $pCoordinate = $namedRange
          ->getRange();
        if ($this
          ->getHashCode() != $namedRange
          ->getWorksheet()
          ->getHashCode()) {
          if (!$namedRange
            ->getLocalOnly()) {
            return $namedRange
              ->getWorksheet()
              ->cellExists($pCoordinate);
          }
          else {
            throw new PHPExcel_Exception('Named range ' . $namedRange
              ->getName() . ' is not accessible from within sheet ' . $this
              ->getTitle());
          }
        }
      }
      else {
        return false;
      }
    }

    // Uppercase coordinate
    $pCoordinate = strtoupper($pCoordinate);
    if (strpos($pCoordinate, ':') !== false || strpos($pCoordinate, ',') !== false) {
      throw new PHPExcel_Exception('Cell coordinate can not be a range of cells.');
    }
    elseif (strpos($pCoordinate, '$') !== false) {
      throw new PHPExcel_Exception('Cell coordinate must not be absolute.');
    }
    else {

      // Coordinates
      $aCoordinates = PHPExcel_Cell::coordinateFromString($pCoordinate);

      // Cell exists?
      return $this->_cellCollection
        ->isDataSet($pCoordinate);
    }
  }

  /**
   * Cell at a specific coordinate by using numeric cell coordinates exists?
   *
   * @param string $pColumn Numeric column coordinate of the cell
   * @param string $pRow Numeric row coordinate of the cell
   * @return boolean
   */
  public function cellExistsByColumnAndRow($pColumn = 0, $pRow = 1) {
    return $this
      ->cellExists(PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow);
  }

  /**
   * Get row dimension at a specific row
   *
   * @param int $pRow Numeric index of the row
   * @return PHPExcel_Worksheet_RowDimension
   */
  public function getRowDimension($pRow = 1, $create = TRUE) {

    // Found
    $found = null;

    // Get row dimension
    if (!isset($this->_rowDimensions[$pRow])) {
      if (!$create) {
        return NULL;
      }
      $this->_rowDimensions[$pRow] = new PHPExcel_Worksheet_RowDimension($pRow);
      $this->_cachedHighestRow = max($this->_cachedHighestRow, $pRow);
    }
    return $this->_rowDimensions[$pRow];
  }

  /**
   * Get column dimension at a specific column
   *
   * @param string $pColumn String index of the column
   * @return PHPExcel_Worksheet_ColumnDimension
   */
  public function getColumnDimension($pColumn = 'A', $create = TRUE) {

    // Uppercase coordinate
    $pColumn = strtoupper($pColumn);

    // Fetch dimensions
    if (!isset($this->_columnDimensions[$pColumn])) {
      if (!$create) {
        return NULL;
      }
      $this->_columnDimensions[$pColumn] = new PHPExcel_Worksheet_ColumnDimension($pColumn);
      if (PHPExcel_Cell::columnIndexFromString($this->_cachedHighestColumn) < PHPExcel_Cell::columnIndexFromString($pColumn)) {
        $this->_cachedHighestColumn = $pColumn;
      }
    }
    return $this->_columnDimensions[$pColumn];
  }

  /**
   * Get column dimension at a specific column by using numeric cell coordinates
   *
   * @param string $pColumn Numeric column coordinate of the cell
   * @return PHPExcel_Worksheet_ColumnDimension
   */
  public function getColumnDimensionByColumn($pColumn = 0) {
    return $this
      ->getColumnDimension(PHPExcel_Cell::stringFromColumnIndex($pColumn));
  }

  /**
   * Get styles
   *
   * @return PHPExcel_Style[]
   */
  public function getStyles() {
    return $this->_styles;
  }

  /**
   * Get default style of workbook.
   *
   * @deprecated
   * @return PHPExcel_Style
   * @throws PHPExcel_Exception
   */
  public function getDefaultStyle() {
    return $this->_parent
      ->getDefaultStyle();
  }

  /**
   * Set default style - should only be used by PHPExcel_IReader implementations!
   *
   * @deprecated
   * @param PHPExcel_Style $pValue
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function setDefaultStyle(PHPExcel_Style $pValue) {
    $this->_parent
      ->getDefaultStyle()
      ->applyFromArray(array(
      'font' => array(
        'name' => $pValue
          ->getFont()
          ->getName(),
        'size' => $pValue
          ->getFont()
          ->getSize(),
      ),
    ));
    return $this;
  }

  /**
   * Get style for cell
   *
   * @param string $pCellCoordinate Cell coordinate (or range) to get style for
   * @return PHPExcel_Style
   * @throws PHPExcel_Exception
   */
  public function getStyle($pCellCoordinate = 'A1') {

    // set this sheet as active
    $this->_parent
      ->setActiveSheetIndex($this->_parent
      ->getIndex($this));

    // set cell coordinate as active
    $this
      ->setSelectedCells(strtoupper($pCellCoordinate));
    return $this->_parent
      ->getCellXfSupervisor();
  }

  /**
   * Get conditional styles for a cell
   *
   * @param string $pCoordinate
   * @return PHPExcel_Style_Conditional[]
   */
  public function getConditionalStyles($pCoordinate = 'A1') {
    $pCoordinate = strtoupper($pCoordinate);
    if (!isset($this->_conditionalStylesCollection[$pCoordinate])) {
      $this->_conditionalStylesCollection[$pCoordinate] = array();
    }
    return $this->_conditionalStylesCollection[$pCoordinate];
  }

  /**
   * Do conditional styles exist for this cell?
   *
   * @param string $pCoordinate
   * @return boolean
   */
  public function conditionalStylesExists($pCoordinate = 'A1') {
    if (isset($this->_conditionalStylesCollection[strtoupper($pCoordinate)])) {
      return true;
    }
    return false;
  }

  /**
   * Removes conditional styles for a cell
   *
   * @param string $pCoordinate
   * @return PHPExcel_Worksheet
   */
  public function removeConditionalStyles($pCoordinate = 'A1') {
    unset($this->_conditionalStylesCollection[strtoupper($pCoordinate)]);
    return $this;
  }

  /**
   * Get collection of conditional styles
   *
   * @return array
   */
  public function getConditionalStylesCollection() {
    return $this->_conditionalStylesCollection;
  }

  /**
   * Set conditional styles
   *
   * @param $pCoordinate string E.g. 'A1'
   * @param $pValue PHPExcel_Style_Conditional[]
   * @return PHPExcel_Worksheet
   */
  public function setConditionalStyles($pCoordinate = 'A1', $pValue) {
    $this->_conditionalStylesCollection[strtoupper($pCoordinate)] = $pValue;
    return $this;
  }

  /**
   * Get style for cell by using numeric cell coordinates
   *
   * @param int $pColumn  Numeric column coordinate of the cell
   * @param int $pRow Numeric row coordinate of the cell
   * @param int pColumn2 Numeric column coordinate of the range cell
   * @param int pRow2 Numeric row coordinate of the range cell
   * @return PHPExcel_Style
   */
  public function getStyleByColumnAndRow($pColumn = 0, $pRow = 1, $pColumn2 = null, $pRow2 = null) {
    if (!is_null($pColumn2) && !is_null($pRow2)) {
      $cellRange = PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow . ':' . PHPExcel_Cell::stringFromColumnIndex($pColumn2) . $pRow2;
      return $this
        ->getStyle($cellRange);
    }
    return $this
      ->getStyle(PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow);
  }

  /**
   * Set shared cell style to a range of cells
   *
   * Please note that this will overwrite existing cell styles for cells in range!
   *
   * @deprecated
   * @param PHPExcel_Style $pSharedCellStyle Cell style to share
   * @param string $pRange Range of cells (i.e. "A1:B10"), or just one cell (i.e. "A1")
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function setSharedStyle(PHPExcel_Style $pSharedCellStyle = null, $pRange = '') {
    $this
      ->duplicateStyle($pSharedCellStyle, $pRange);
    return $this;
  }

  /**
   * Duplicate cell style to a range of cells
   *
   * Please note that this will overwrite existing cell styles for cells in range!
   *
   * @param PHPExcel_Style $pCellStyle Cell style to duplicate
   * @param string $pRange Range of cells (i.e. "A1:B10"), or just one cell (i.e. "A1")
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function duplicateStyle(PHPExcel_Style $pCellStyle = null, $pRange = '') {

    // make sure we have a real style and not supervisor
    $style = $pCellStyle
      ->getIsSupervisor() ? $pCellStyle
      ->getSharedComponent() : $pCellStyle;

    // Add the style to the workbook if necessary
    $workbook = $this->_parent;
    if ($existingStyle = $this->_parent
      ->getCellXfByHashCode($pCellStyle
      ->getHashCode())) {

      // there is already such cell Xf in our collection
      $xfIndex = $existingStyle
        ->getIndex();
    }
    else {

      // we don't have such a cell Xf, need to add
      $workbook
        ->addCellXf($pCellStyle);
      $xfIndex = $pCellStyle
        ->getIndex();
    }

    // Calculate range outer borders
    list($rangeStart, $rangeEnd) = PHPExcel_Cell::rangeBoundaries($pRange . ':' . $pRange);

    // Make sure we can loop upwards on rows and columns
    if ($rangeStart[0] > $rangeEnd[0] && $rangeStart[1] > $rangeEnd[1]) {
      $tmp = $rangeStart;
      $rangeStart = $rangeEnd;
      $rangeEnd = $tmp;
    }

    // Loop through cells and apply styles
    for ($col = $rangeStart[0]; $col <= $rangeEnd[0]; ++$col) {
      for ($row = $rangeStart[1]; $row <= $rangeEnd[1]; ++$row) {
        $this
          ->getCell(PHPExcel_Cell::stringFromColumnIndex($col - 1) . $row)
          ->setXfIndex($xfIndex);
      }
    }
    return $this;
  }

  /**
   * Duplicate conditional style to a range of cells
   *
   * Please note that this will overwrite existing cell styles for cells in range!
   *
   * @param	array of PHPExcel_Style_Conditional	$pCellStyle	Cell style to duplicate
   * @param string $pRange Range of cells (i.e. "A1:B10"), or just one cell (i.e. "A1")
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function duplicateConditionalStyle(array $pCellStyle = null, $pRange = '') {
    foreach ($pCellStyle as $cellStyle) {
      if (!$cellStyle instanceof PHPExcel_Style_Conditional) {
        throw new PHPExcel_Exception('Style is not a conditional style');
      }
    }

    // Calculate range outer borders
    list($rangeStart, $rangeEnd) = PHPExcel_Cell::rangeBoundaries($pRange . ':' . $pRange);

    // Make sure we can loop upwards on rows and columns
    if ($rangeStart[0] > $rangeEnd[0] && $rangeStart[1] > $rangeEnd[1]) {
      $tmp = $rangeStart;
      $rangeStart = $rangeEnd;
      $rangeEnd = $tmp;
    }

    // Loop through cells and apply styles
    for ($col = $rangeStart[0]; $col <= $rangeEnd[0]; ++$col) {
      for ($row = $rangeStart[1]; $row <= $rangeEnd[1]; ++$row) {
        $this
          ->setConditionalStyles(PHPExcel_Cell::stringFromColumnIndex($col - 1) . $row, $pCellStyle);
      }
    }
    return $this;
  }

  /**
   * Duplicate cell style array to a range of cells
   *
   * Please note that this will overwrite existing cell styles for cells in range,
   * if they are in the styles array. For example, if you decide to set a range of
   * cells to font bold, only include font bold in the styles array.
   *
   * @deprecated
   * @param array $pStyles Array containing style information
   * @param string $pRange Range of cells (i.e. "A1:B10"), or just one cell (i.e. "A1")
   * @param boolean $pAdvanced Advanced mode for setting borders.
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function duplicateStyleArray($pStyles = null, $pRange = '', $pAdvanced = true) {
    $this
      ->getStyle($pRange)
      ->applyFromArray($pStyles, $pAdvanced);
    return $this;
  }

  /**
   * Set break on a cell
   *
   * @param string $pCell Cell coordinate (e.g. A1)
   * @param int $pBreak Break type (type of PHPExcel_Worksheet::BREAK_*)
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function setBreak($pCell = 'A1', $pBreak = PHPExcel_Worksheet::BREAK_NONE) {

    // Uppercase coordinate
    $pCell = strtoupper($pCell);
    if ($pCell != '') {
      if ($pBreak == PHPExcel_Worksheet::BREAK_NONE) {
        if (isset($this->_breaks[$pCell])) {
          unset($this->_breaks[$pCell]);
        }
      }
      else {
        $this->_breaks[$pCell] = $pBreak;
      }
    }
    else {
      throw new PHPExcel_Exception('No cell coordinate specified.');
    }
    return $this;
  }

  /**
   * Set break on a cell by using numeric cell coordinates
   *
   * @param integer $pColumn Numeric column coordinate of the cell
   * @param integer $pRow Numeric row coordinate of the cell
   * @param  integer $pBreak Break type (type of PHPExcel_Worksheet::BREAK_*)
   * @return PHPExcel_Worksheet
   */
  public function setBreakByColumnAndRow($pColumn = 0, $pRow = 1, $pBreak = PHPExcel_Worksheet::BREAK_NONE) {
    return $this
      ->setBreak(PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow, $pBreak);
  }

  /**
   * Get breaks
   *
   * @return array[]
   */
  public function getBreaks() {
    return $this->_breaks;
  }

  /**
   * Set merge on a cell range
   *
   * @param string $pRange  Cell range (e.g. A1:E1)
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function mergeCells($pRange = 'A1:A1') {

    // Uppercase coordinate
    $pRange = strtoupper($pRange);
    if (strpos($pRange, ':') !== false) {
      $this->_mergeCells[$pRange] = $pRange;

      // make sure cells are created
      // get the cells in the range
      $aReferences = PHPExcel_Cell::extractAllCellReferencesInRange($pRange);

      // create upper left cell if it does not already exist
      $upperLeft = $aReferences[0];
      if (!$this
        ->cellExists($upperLeft)) {
        $this
          ->getCell($upperLeft)
          ->setValueExplicit(null, PHPExcel_Cell_DataType::TYPE_NULL);
      }

      // create or blank out the rest of the cells in the range
      $count = count($aReferences);
      for ($i = 1; $i < $count; $i++) {
        $this
          ->getCell($aReferences[$i])
          ->setValueExplicit(null, PHPExcel_Cell_DataType::TYPE_NULL);
      }
    }
    else {
      throw new PHPExcel_Exception('Merge must be set on a range of cells.');
    }
    return $this;
  }

  /**
   * Set merge on a cell range by using numeric cell coordinates
   *
   * @param int $pColumn1    Numeric column coordinate of the first cell
   * @param int $pRow1        Numeric row coordinate of the first cell
   * @param int $pColumn2    Numeric column coordinate of the last cell
   * @param int $pRow2        Numeric row coordinate of the last cell
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function mergeCellsByColumnAndRow($pColumn1 = 0, $pRow1 = 1, $pColumn2 = 0, $pRow2 = 1) {
    $cellRange = PHPExcel_Cell::stringFromColumnIndex($pColumn1) . $pRow1 . ':' . PHPExcel_Cell::stringFromColumnIndex($pColumn2) . $pRow2;
    return $this
      ->mergeCells($cellRange);
  }

  /**
   * Remove merge on a cell range
   *
   * @param    string            $pRange        Cell range (e.g. A1:E1)
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function unmergeCells($pRange = 'A1:A1') {

    // Uppercase coordinate
    $pRange = strtoupper($pRange);
    if (strpos($pRange, ':') !== false) {
      if (isset($this->_mergeCells[$pRange])) {
        unset($this->_mergeCells[$pRange]);
      }
      else {
        throw new PHPExcel_Exception('Cell range ' . $pRange . ' not known as merged.');
      }
    }
    else {
      throw new PHPExcel_Exception('Merge can only be removed from a range of cells.');
    }
    return $this;
  }

  /**
   * Remove merge on a cell range by using numeric cell coordinates
   *
   * @param int $pColumn1    Numeric column coordinate of the first cell
   * @param int $pRow1        Numeric row coordinate of the first cell
   * @param int $pColumn2    Numeric column coordinate of the last cell
   * @param int $pRow2        Numeric row coordinate of the last cell
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function unmergeCellsByColumnAndRow($pColumn1 = 0, $pRow1 = 1, $pColumn2 = 0, $pRow2 = 1) {
    $cellRange = PHPExcel_Cell::stringFromColumnIndex($pColumn1) . $pRow1 . ':' . PHPExcel_Cell::stringFromColumnIndex($pColumn2) . $pRow2;
    return $this
      ->unmergeCells($cellRange);
  }

  /**
   * Get merge cells array.
   *
   * @return array[]
   */
  public function getMergeCells() {
    return $this->_mergeCells;
  }

  /**
   * Set merge cells array for the entire sheet. Use instead mergeCells() to merge
   * a single cell range.
   *
   * @param array
   */
  public function setMergeCells($pValue = array()) {
    $this->_mergeCells = $pValue;
    return $this;
  }

  /**
   * Set protection on a cell range
   *
   * @param    string            $pRange                Cell (e.g. A1) or cell range (e.g. A1:E1)
   * @param    string            $pPassword            Password to unlock the protection
   * @param    boolean        $pAlreadyHashed    If the password has already been hashed, set this to true
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function protectCells($pRange = 'A1', $pPassword = '', $pAlreadyHashed = false) {

    // Uppercase coordinate
    $pRange = strtoupper($pRange);
    if (!$pAlreadyHashed) {
      $pPassword = PHPExcel_Shared_PasswordHasher::hashPassword($pPassword);
    }
    $this->_protectedCells[$pRange] = $pPassword;
    return $this;
  }

  /**
   * Set protection on a cell range by using numeric cell coordinates
   *
   * @param int  $pColumn1            Numeric column coordinate of the first cell
   * @param int  $pRow1                Numeric row coordinate of the first cell
   * @param int  $pColumn2            Numeric column coordinate of the last cell
   * @param int  $pRow2                Numeric row coordinate of the last cell
   * @param string $pPassword            Password to unlock the protection
   * @param    boolean $pAlreadyHashed    If the password has already been hashed, set this to true
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function protectCellsByColumnAndRow($pColumn1 = 0, $pRow1 = 1, $pColumn2 = 0, $pRow2 = 1, $pPassword = '', $pAlreadyHashed = false) {
    $cellRange = PHPExcel_Cell::stringFromColumnIndex($pColumn1) . $pRow1 . ':' . PHPExcel_Cell::stringFromColumnIndex($pColumn2) . $pRow2;
    return $this
      ->protectCells($cellRange, $pPassword, $pAlreadyHashed);
  }

  /**
   * Remove protection on a cell range
   *
   * @param    string            $pRange        Cell (e.g. A1) or cell range (e.g. A1:E1)
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function unprotectCells($pRange = 'A1') {

    // Uppercase coordinate
    $pRange = strtoupper($pRange);
    if (isset($this->_protectedCells[$pRange])) {
      unset($this->_protectedCells[$pRange]);
    }
    else {
      throw new PHPExcel_Exception('Cell range ' . $pRange . ' not known as protected.');
    }
    return $this;
  }

  /**
   * Remove protection on a cell range by using numeric cell coordinates
   *
   * @param int  $pColumn1            Numeric column coordinate of the first cell
   * @param int  $pRow1                Numeric row coordinate of the first cell
   * @param int  $pColumn2            Numeric column coordinate of the last cell
   * @param int $pRow2                Numeric row coordinate of the last cell
   * @param string $pPassword            Password to unlock the protection
   * @param    boolean $pAlreadyHashed    If the password has already been hashed, set this to true
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function unprotectCellsByColumnAndRow($pColumn1 = 0, $pRow1 = 1, $pColumn2 = 0, $pRow2 = 1, $pPassword = '', $pAlreadyHashed = false) {
    $cellRange = PHPExcel_Cell::stringFromColumnIndex($pColumn1) . $pRow1 . ':' . PHPExcel_Cell::stringFromColumnIndex($pColumn2) . $pRow2;
    return $this
      ->unprotectCells($cellRange, $pPassword, $pAlreadyHashed);
  }

  /**
   * Get protected cells
   *
   * @return array[]
   */
  public function getProtectedCells() {
    return $this->_protectedCells;
  }

  /**
   *    Get Autofilter
   *
   *    @return PHPExcel_Worksheet_AutoFilter
   */
  public function getAutoFilter() {
    return $this->_autoFilter;
  }

  /**
   *    Set AutoFilter
   *
   *    @param    PHPExcel_Worksheet_AutoFilter|string   $pValue
   *            A simple string containing a Cell range like 'A1:E10' is permitted for backward compatibility
   *    @throws    PHPExcel_Exception
   *    @return PHPExcel_Worksheet
   */
  public function setAutoFilter($pValue) {
    $pRange = strtoupper($pValue);
    if (is_string($pValue)) {
      $this->_autoFilter
        ->setRange($pValue);
    }
    elseif (is_object($pValue) && $pValue instanceof PHPExcel_Worksheet_AutoFilter) {
      $this->_autoFilter = $pValue;
    }
    return $this;
  }

  /**
   *    Set Autofilter Range by using numeric cell coordinates
   *
   *    @param  integer  $pColumn1    Numeric column coordinate of the first cell
   *    @param  integer  $pRow1       Numeric row coordinate of the first cell
   *    @param  integer  $pColumn2    Numeric column coordinate of the second cell
   *    @param  integer  $pRow2       Numeric row coordinate of the second cell
   *    @throws    PHPExcel_Exception
   *    @return PHPExcel_Worksheet
   */
  public function setAutoFilterByColumnAndRow($pColumn1 = 0, $pRow1 = 1, $pColumn2 = 0, $pRow2 = 1) {
    return $this
      ->setAutoFilter(PHPExcel_Cell::stringFromColumnIndex($pColumn1) . $pRow1 . ':' . PHPExcel_Cell::stringFromColumnIndex($pColumn2) . $pRow2);
  }

  /**
   * Remove autofilter
   *
   * @return PHPExcel_Worksheet
   */
  public function removeAutoFilter() {
    $this->_autoFilter
      ->setRange(NULL);
    return $this;
  }

  /**
   * Get Freeze Pane
   *
   * @return string
   */
  public function getFreezePane() {
    return $this->_freezePane;
  }

  /**
   * Freeze Pane
   *
   * @param    string        $pCell        Cell (i.e. A2)
   *                                    Examples:
   *                                        A2 will freeze the rows above cell A2 (i.e row 1)
   *                                        B1 will freeze the columns to the left of cell B1 (i.e column A)
   *                                        B2 will freeze the rows above and to the left of cell A2
   *                                            (i.e row 1 and column A)
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function freezePane($pCell = '') {

    // Uppercase coordinate
    $pCell = strtoupper($pCell);
    if (strpos($pCell, ':') === false && strpos($pCell, ',') === false) {
      $this->_freezePane = $pCell;
    }
    else {
      throw new PHPExcel_Exception('Freeze pane can not be set on a range of cells.');
    }
    return $this;
  }

  /**
   * Freeze Pane by using numeric cell coordinates
   *
   * @param int $pColumn    Numeric column coordinate of the cell
   * @param int $pRow        Numeric row coordinate of the cell
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function freezePaneByColumnAndRow($pColumn = 0, $pRow = 1) {
    return $this
      ->freezePane(PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow);
  }

  /**
   * Unfreeze Pane
   *
   * @return PHPExcel_Worksheet
   */
  public function unfreezePane() {
    return $this
      ->freezePane('');
  }

  /**
   * Insert a new row, updating all possible related data
   *
   * @param int $pBefore    Insert before this one
   * @param int $pNumRows    Number of rows to insert
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function insertNewRowBefore($pBefore = 1, $pNumRows = 1) {
    if ($pBefore >= 1) {
      $objReferenceHelper = PHPExcel_ReferenceHelper::getInstance();
      $objReferenceHelper
        ->insertNewBefore('A' . $pBefore, 0, $pNumRows, $this);
    }
    else {
      throw new PHPExcel_Exception("Rows can only be inserted before at least row 1.");
    }
    return $this;
  }

  /**
   * Insert a new column, updating all possible related data
   *
   * @param int $pBefore    Insert before this one
   * @param int $pNumCols    Number of columns to insert
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function insertNewColumnBefore($pBefore = 'A', $pNumCols = 1) {
    if (!is_numeric($pBefore)) {
      $objReferenceHelper = PHPExcel_ReferenceHelper::getInstance();
      $objReferenceHelper
        ->insertNewBefore($pBefore . '1', $pNumCols, 0, $this);
    }
    else {
      throw new PHPExcel_Exception("Column references should not be numeric.");
    }
    return $this;
  }

  /**
   * Insert a new column, updating all possible related data
   *
   * @param int $pBefore    Insert before this one (numeric column coordinate of the cell)
   * @param int $pNumCols    Number of columns to insert
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function insertNewColumnBeforeByIndex($pBefore = 0, $pNumCols = 1) {
    if ($pBefore >= 0) {
      return $this
        ->insertNewColumnBefore(PHPExcel_Cell::stringFromColumnIndex($pBefore), $pNumCols);
    }
    else {
      throw new PHPExcel_Exception("Columns can only be inserted before at least column A (0).");
    }
  }

  /**
   * Delete a row, updating all possible related data
   *
   * @param int $pRow        Remove starting with this one
   * @param int $pNumRows    Number of rows to remove
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function removeRow($pRow = 1, $pNumRows = 1) {
    if ($pRow >= 1) {
      $highestRow = $this
        ->getHighestDataRow();
      $objReferenceHelper = PHPExcel_ReferenceHelper::getInstance();
      $objReferenceHelper
        ->insertNewBefore('A' . ($pRow + $pNumRows), 0, -$pNumRows, $this);
      for ($r = 0; $r < $pNumRows; ++$r) {
        $this
          ->getCellCacheController()
          ->removeRow($highestRow);
        --$highestRow;
      }
    }
    else {
      throw new PHPExcel_Exception("Rows to be deleted should at least start from row 1.");
    }
    return $this;
  }

  /**
   * Remove a column, updating all possible related data
   *
   * @param string    $pColumn     Remove starting with this one
   * @param int       $pNumCols    Number of columns to remove
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function removeColumn($pColumn = 'A', $pNumCols = 1) {
    if (!is_numeric($pColumn)) {
      $highestColumn = $this
        ->getHighestDataColumn();
      $pColumn = PHPExcel_Cell::stringFromColumnIndex(PHPExcel_Cell::columnIndexFromString($pColumn) - 1 + $pNumCols);
      $objReferenceHelper = PHPExcel_ReferenceHelper::getInstance();
      $objReferenceHelper
        ->insertNewBefore($pColumn . '1', -$pNumCols, 0, $this);
      for ($c = 0; $c < $pNumCols; ++$c) {
        $this
          ->getCellCacheController()
          ->removeColumn($highestColumn);
        $highestColumn = PHPExcel_Cell::stringFromColumnIndex(PHPExcel_Cell::columnIndexFromString($highestColumn) - 2);
      }
    }
    else {
      throw new PHPExcel_Exception("Column references should not be numeric.");
    }
    return $this;
  }

  /**
   * Remove a column, updating all possible related data
   *
   * @param int $pColumn    Remove starting with this one (numeric column coordinate of the cell)
   * @param int $pNumCols    Number of columns to remove
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function removeColumnByIndex($pColumn = 0, $pNumCols = 1) {
    if ($pColumn >= 0) {
      return $this
        ->removeColumn(PHPExcel_Cell::stringFromColumnIndex($pColumn), $pNumCols);
    }
    else {
      throw new PHPExcel_Exception("Columns to be deleted should at least start from column 0");
    }
  }

  /**
   * Show gridlines?
   *
   * @return boolean
   */
  public function getShowGridlines() {
    return $this->_showGridlines;
  }

  /**
   * Set show gridlines
   *
   * @param boolean $pValue    Show gridlines (true/false)
   * @return PHPExcel_Worksheet
   */
  public function setShowGridlines($pValue = false) {
    $this->_showGridlines = $pValue;
    return $this;
  }

  /**
   * Print gridlines?
   *
   * @return boolean
   */
  public function getPrintGridlines() {
    return $this->_printGridlines;
  }

  /**
   * Set print gridlines
   *
   * @param boolean $pValue Print gridlines (true/false)
   * @return PHPExcel_Worksheet
   */
  public function setPrintGridlines($pValue = false) {
    $this->_printGridlines = $pValue;
    return $this;
  }

  /**
   * Show row and column headers?
   *
   * @return boolean
   */
  public function getShowRowColHeaders() {
    return $this->_showRowColHeaders;
  }

  /**
   * Set show row and column headers
   *
   * @param boolean $pValue Show row and column headers (true/false)
   * @return PHPExcel_Worksheet
   */
  public function setShowRowColHeaders($pValue = false) {
    $this->_showRowColHeaders = $pValue;
    return $this;
  }

  /**
   * Show summary below? (Row/Column outlining)
   *
   * @return boolean
   */
  public function getShowSummaryBelow() {
    return $this->_showSummaryBelow;
  }

  /**
   * Set show summary below
   *
   * @param boolean $pValue    Show summary below (true/false)
   * @return PHPExcel_Worksheet
   */
  public function setShowSummaryBelow($pValue = true) {
    $this->_showSummaryBelow = $pValue;
    return $this;
  }

  /**
   * Show summary right? (Row/Column outlining)
   *
   * @return boolean
   */
  public function getShowSummaryRight() {
    return $this->_showSummaryRight;
  }

  /**
   * Set show summary right
   *
   * @param boolean $pValue    Show summary right (true/false)
   * @return PHPExcel_Worksheet
   */
  public function setShowSummaryRight($pValue = true) {
    $this->_showSummaryRight = $pValue;
    return $this;
  }

  /**
   * Get comments
   *
   * @return PHPExcel_Comment[]
   */
  public function getComments() {
    return $this->_comments;
  }

  /**
   * Set comments array for the entire sheet.
   *
   * @param array of PHPExcel_Comment
   * @return PHPExcel_Worksheet
   */
  public function setComments($pValue = array()) {
    $this->_comments = $pValue;
    return $this;
  }

  /**
   * Get comment for cell
   *
   * @param string $pCellCoordinate    Cell coordinate to get comment for
   * @return PHPExcel_Comment
   * @throws PHPExcel_Exception
   */
  public function getComment($pCellCoordinate = 'A1') {

    // Uppercase coordinate
    $pCellCoordinate = strtoupper($pCellCoordinate);
    if (strpos($pCellCoordinate, ':') !== false || strpos($pCellCoordinate, ',') !== false) {
      throw new PHPExcel_Exception('Cell coordinate string can not be a range of cells.');
    }
    else {
      if (strpos($pCellCoordinate, '$') !== false) {
        throw new PHPExcel_Exception('Cell coordinate string must not be absolute.');
      }
      else {
        if ($pCellCoordinate == '') {
          throw new PHPExcel_Exception('Cell coordinate can not be zero-length string.');
        }
        else {

          // Check if we already have a comment for this cell.
          // If not, create a new comment.
          if (isset($this->_comments[$pCellCoordinate])) {
            return $this->_comments[$pCellCoordinate];
          }
          else {
            $newComment = new PHPExcel_Comment();
            $this->_comments[$pCellCoordinate] = $newComment;
            return $newComment;
          }
        }
      }
    }
  }

  /**
   * Get comment for cell by using numeric cell coordinates
   *
   * @param int $pColumn    Numeric column coordinate of the cell
   * @param int $pRow        Numeric row coordinate of the cell
   * @return PHPExcel_Comment
   */
  public function getCommentByColumnAndRow($pColumn = 0, $pRow = 1) {
    return $this
      ->getComment(PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow);
  }

  /**
   * Get selected cell
   *
   * @deprecated
   * @return string
   */
  public function getSelectedCell() {
    return $this
      ->getSelectedCells();
  }

  /**
   * Get active cell
   *
   * @return string Example: 'A1'
   */
  public function getActiveCell() {
    return $this->_activeCell;
  }

  /**
   * Get selected cells
   *
   * @return string
   */
  public function getSelectedCells() {
    return $this->_selectedCells;
  }

  /**
   * Selected cell
   *
   * @param    string        $pCoordinate    Cell (i.e. A1)
   * @return PHPExcel_Worksheet
   */
  public function setSelectedCell($pCoordinate = 'A1') {
    return $this
      ->setSelectedCells($pCoordinate);
  }

  /**
   * Select a range of cells.
   *
   * @param    string        $pCoordinate    Cell range, examples: 'A1', 'B2:G5', 'A:C', '3:6'
   * @throws    PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function setSelectedCells($pCoordinate = 'A1') {

    // Uppercase coordinate
    $pCoordinate = strtoupper($pCoordinate);

    // Convert 'A' to 'A:A'
    $pCoordinate = preg_replace('/^([A-Z]+)$/', '${1}:${1}', $pCoordinate);

    // Convert '1' to '1:1'
    $pCoordinate = preg_replace('/^([0-9]+)$/', '${1}:${1}', $pCoordinate);

    // Convert 'A:C' to 'A1:C1048576'
    $pCoordinate = preg_replace('/^([A-Z]+):([A-Z]+)$/', '${1}1:${2}1048576', $pCoordinate);

    // Convert '1:3' to 'A1:XFD3'
    $pCoordinate = preg_replace('/^([0-9]+):([0-9]+)$/', 'A${1}:XFD${2}', $pCoordinate);
    if (strpos($pCoordinate, ':') !== false || strpos($pCoordinate, ',') !== false) {
      list($first, ) = PHPExcel_Cell::splitRange($pCoordinate);
      $this->_activeCell = $first[0];
    }
    else {
      $this->_activeCell = $pCoordinate;
    }
    $this->_selectedCells = $pCoordinate;
    return $this;
  }

  /**
   * Selected cell by using numeric cell coordinates
   *
   * @param int $pColumn Numeric column coordinate of the cell
   * @param int $pRow Numeric row coordinate of the cell
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function setSelectedCellByColumnAndRow($pColumn = 0, $pRow = 1) {
    return $this
      ->setSelectedCells(PHPExcel_Cell::stringFromColumnIndex($pColumn) . $pRow);
  }

  /**
   * Get right-to-left
   *
   * @return boolean
   */
  public function getRightToLeft() {
    return $this->_rightToLeft;
  }

  /**
   * Set right-to-left
   *
   * @param boolean $value    Right-to-left true/false
   * @return PHPExcel_Worksheet
   */
  public function setRightToLeft($value = false) {
    $this->_rightToLeft = $value;
    return $this;
  }

  /**
   * Fill worksheet from values in array
   *
   * @param array $source Source array
   * @param mixed $nullValue Value in source array that stands for blank cell
   * @param string $startCell Insert array starting from this cell address as the top left coordinate
   * @param boolean $strictNullComparison Apply strict comparison when testing for null values in the array
   * @throws PHPExcel_Exception
   * @return PHPExcel_Worksheet
   */
  public function fromArray($source = null, $nullValue = null, $startCell = 'A1', $strictNullComparison = false) {
    if (is_array($source)) {

      //    Convert a 1-D array to 2-D (for ease of looping)
      if (!is_array(end($source))) {
        $source = array(
          $source,
        );
      }

      // start coordinate
      list($startColumn, $startRow) = PHPExcel_Cell::coordinateFromString($startCell);

      // Loop through $source
      foreach ($source as $rowData) {
        $currentColumn = $startColumn;
        foreach ($rowData as $cellValue) {
          if ($strictNullComparison) {
            if ($cellValue !== $nullValue) {

              // Set cell value
              $this
                ->getCell($currentColumn . $startRow)
                ->setValue($cellValue);
            }
          }
          else {
            if ($cellValue != $nullValue) {

              // Set cell value
              $this
                ->getCell($currentColumn . $startRow)
                ->setValue($cellValue);
            }
          }
          ++$currentColumn;
        }
        ++$startRow;
      }
    }
    else {
      throw new PHPExcel_Exception("Parameter \$source should be an array.");
    }
    return $this;
  }

  /**
   * Create array from a range of cells
   *
   * @param string $pRange Range of cells (i.e. "A1:B10"), or just one cell (i.e. "A1")
   * @param mixed $nullValue Value returned in the array entry if a cell doesn't exist
   * @param boolean $calculateFormulas Should formulas be calculated?
   * @param boolean $formatData Should formatting be applied to cell values?
   * @param boolean $returnCellRef False - Return a simple array of rows and columns indexed by number counting from zero
   *                               True - Return rows and columns indexed by their actual row and column IDs
   * @return array
   */
  public function rangeToArray($pRange = 'A1', $nullValue = null, $calculateFormulas = true, $formatData = true, $returnCellRef = false) {

    // Returnvalue
    $returnValue = array();

    //    Identify the range that we need to extract from the worksheet
    list($rangeStart, $rangeEnd) = PHPExcel_Cell::rangeBoundaries($pRange);
    $minCol = PHPExcel_Cell::stringFromColumnIndex($rangeStart[0] - 1);
    $minRow = $rangeStart[1];
    $maxCol = PHPExcel_Cell::stringFromColumnIndex($rangeEnd[0] - 1);
    $maxRow = $rangeEnd[1];
    $maxCol++;

    // Loop through rows
    $r = -1;
    for ($row = $minRow; $row <= $maxRow; ++$row) {
      $rRef = $returnCellRef ? $row : ++$r;
      $c = -1;

      // Loop through columns in the current row
      for ($col = $minCol; $col != $maxCol; ++$col) {
        $cRef = $returnCellRef ? $col : ++$c;

        //    Using getCell() will create a new cell if it doesn't already exist. We don't want that to happen
        //        so we test and retrieve directly against _cellCollection
        if ($this->_cellCollection
          ->isDataSet($col . $row)) {

          // Cell exists
          $cell = $this->_cellCollection
            ->getCacheData($col . $row);
          if ($cell
            ->getValue() !== null) {
            if ($cell
              ->getValue() instanceof PHPExcel_RichText) {
              $returnValue[$rRef][$cRef] = $cell
                ->getValue()
                ->getPlainText();
            }
            else {
              if ($calculateFormulas) {
                $returnValue[$rRef][$cRef] = $cell
                  ->getCalculatedValue();
              }
              else {
                $returnValue[$rRef][$cRef] = $cell
                  ->getValue();
              }
            }
            if ($formatData) {
              $style = $this->_parent
                ->getCellXfByIndex($cell
                ->getXfIndex());
              $returnValue[$rRef][$cRef] = PHPExcel_Style_NumberFormat::toFormattedString($returnValue[$rRef][$cRef], $style && $style
                ->getNumberFormat() ? $style
                ->getNumberFormat()
                ->getFormatCode() : PHPExcel_Style_NumberFormat::FORMAT_GENERAL);
            }
          }
          else {

            // Cell holds a NULL
            $returnValue[$rRef][$cRef] = $nullValue;
          }
        }
        else {

          // Cell doesn't exist
          $returnValue[$rRef][$cRef] = $nullValue;
        }
      }
    }

    // Return
    return $returnValue;
  }

  /**
   * Create array from a range of cells
   *
   * @param  string $pNamedRange Name of the Named Range
   * @param  mixed  $nullValue Value returned in the array entry if a cell doesn't exist
   * @param  boolean $calculateFormulas  Should formulas be calculated?
   * @param  boolean $formatData  Should formatting be applied to cell values?
   * @param  boolean $returnCellRef False - Return a simple array of rows and columns indexed by number counting from zero
   *                                True - Return rows and columns indexed by their actual row and column IDs
   * @return array
   * @throws PHPExcel_Exception
   */
  public function namedRangeToArray($pNamedRange = '', $nullValue = null, $calculateFormulas = true, $formatData = true, $returnCellRef = false) {
    $namedRange = PHPExcel_NamedRange::resolveRange($pNamedRange, $this);
    if ($namedRange !== NULL) {
      $pWorkSheet = $namedRange
        ->getWorksheet();
      $pCellRange = $namedRange
        ->getRange();
      return $pWorkSheet
        ->rangeToArray($pCellRange, $nullValue, $calculateFormulas, $formatData, $returnCellRef);
    }
    throw new PHPExcel_Exception('Named Range ' . $pNamedRange . ' does not exist.');
  }

  /**
   * Create array from worksheet
   *
   * @param mixed $nullValue Value returned in the array entry if a cell doesn't exist
   * @param boolean $calculateFormulas Should formulas be calculated?
   * @param boolean $formatData  Should formatting be applied to cell values?
   * @param boolean $returnCellRef False - Return a simple array of rows and columns indexed by number counting from zero
   *                               True - Return rows and columns indexed by their actual row and column IDs
   * @return array
   */
  public function toArray($nullValue = null, $calculateFormulas = true, $formatData = true, $returnCellRef = false) {

    // Garbage collect...
    $this
      ->garbageCollect();

    //    Identify the range that we need to extract from the worksheet
    $maxCol = $this
      ->getHighestColumn();
    $maxRow = $this
      ->getHighestRow();

    // Return
    return $this
      ->rangeToArray('A1:' . $maxCol . $maxRow, $nullValue, $calculateFormulas, $formatData, $returnCellRef);
  }

  /**
   * Get row iterator
   *
   * @param   integer   $startRow   The row number at which to start iterating
   * @param   integer   $endRow     The row number at which to stop iterating
   *
   * @return PHPExcel_Worksheet_RowIterator
   */
  public function getRowIterator($startRow = 1, $endRow = null) {
    return new PHPExcel_Worksheet_RowIterator($this, $startRow, $endRow);
  }

  /**
   * Get column iterator
   *
   * @param   string   $startColumn The column address at which to start iterating
   * @param   string   $endColumn   The column address at which to stop iterating
   *
   * @return PHPExcel_Worksheet_ColumnIterator
   */
  public function getColumnIterator($startColumn = 'A', $endColumn = null) {
    return new PHPExcel_Worksheet_ColumnIterator($this, $startColumn, $endColumn);
  }

  /**
   * Run PHPExcel garabage collector.
   *
   * @return PHPExcel_Worksheet
   */
  public function garbageCollect() {

    // Flush cache
    $this->_cellCollection
      ->getCacheData('A1');

    // Build a reference table from images
    //        $imageCoordinates = array();
    //        $iterator = $this->getDrawingCollection()->getIterator();
    //        while ($iterator->valid()) {
    //            $imageCoordinates[$iterator->current()->getCoordinates()] = true;
    //
    //            $iterator->next();
    //        }
    //
    // Lookup highest column and highest row if cells are cleaned
    $colRow = $this->_cellCollection
      ->getHighestRowAndColumn();
    $highestRow = $colRow['row'];
    $highestColumn = PHPExcel_Cell::columnIndexFromString($colRow['column']);

    // Loop through column dimensions
    foreach ($this->_columnDimensions as $dimension) {
      $highestColumn = max($highestColumn, PHPExcel_Cell::columnIndexFromString($dimension
        ->getColumnIndex()));
    }

    // Loop through row dimensions
    foreach ($this->_rowDimensions as $dimension) {
      $highestRow = max($highestRow, $dimension
        ->getRowIndex());
    }

    // Cache values
    if ($highestColumn < 0) {
      $this->_cachedHighestColumn = 'A';
    }
    else {
      $this->_cachedHighestColumn = PHPExcel_Cell::stringFromColumnIndex(--$highestColumn);
    }
    $this->_cachedHighestRow = $highestRow;

    // Return
    return $this;
  }

  /**
   * Get hash code
   *
   * @return string    Hash code
   */
  public function getHashCode() {
    if ($this->_dirty) {
      $this->_hash = md5($this->_title . $this->_autoFilter . ($this->_protection
        ->isProtectionEnabled() ? 't' : 'f') . __CLASS__);
      $this->_dirty = false;
    }
    return $this->_hash;
  }

  /**
   * Extract worksheet title from range.
   *
   * Example: extractSheetTitle("testSheet!A1") ==> 'A1'
   * Example: extractSheetTitle("'testSheet 1'!A1", true) ==> array('testSheet 1', 'A1');
   *
   * @param string $pRange    Range to extract title from
   * @param bool $returnRange    Return range? (see example)
   * @return mixed
   */
  public static function extractSheetTitle($pRange, $returnRange = false) {

    // Sheet title included?
    if (($sep = strpos($pRange, '!')) === false) {
      return '';
    }
    if ($returnRange) {
      return array(
        trim(substr($pRange, 0, $sep), "'"),
        substr($pRange, $sep + 1),
      );
    }
    return substr($pRange, $sep + 1);
  }

  /**
   * Get hyperlink
   *
   * @param string $pCellCoordinate    Cell coordinate to get hyperlink for
   */
  public function getHyperlink($pCellCoordinate = 'A1') {

    // return hyperlink if we already have one
    if (isset($this->_hyperlinkCollection[$pCellCoordinate])) {
      return $this->_hyperlinkCollection[$pCellCoordinate];
    }

    // else create hyperlink
    $this->_hyperlinkCollection[$pCellCoordinate] = new PHPExcel_Cell_Hyperlink();
    return $this->_hyperlinkCollection[$pCellCoordinate];
  }

  /**
   * Set hyperlnk
   *
   * @param string $pCellCoordinate    Cell coordinate to insert hyperlink
   * @param    PHPExcel_Cell_Hyperlink    $pHyperlink
   * @return PHPExcel_Worksheet
   */
  public function setHyperlink($pCellCoordinate = 'A1', PHPExcel_Cell_Hyperlink $pHyperlink = null) {
    if ($pHyperlink === null) {
      unset($this->_hyperlinkCollection[$pCellCoordinate]);
    }
    else {
      $this->_hyperlinkCollection[$pCellCoordinate] = $pHyperlink;
    }
    return $this;
  }

  /**
   * Hyperlink at a specific coordinate exists?
   *
   * @param string $pCoordinate
   * @return boolean
   */
  public function hyperlinkExists($pCoordinate = 'A1') {
    return isset($this->_hyperlinkCollection[$pCoordinate]);
  }

  /**
   * Get collection of hyperlinks
   *
   * @return PHPExcel_Cell_Hyperlink[]
   */
  public function getHyperlinkCollection() {
    return $this->_hyperlinkCollection;
  }

  /**
   * Get data validation
   *
   * @param string $pCellCoordinate Cell coordinate to get data validation for
   */
  public function getDataValidation($pCellCoordinate = 'A1') {

    // return data validation if we already have one
    if (isset($this->_dataValidationCollection[$pCellCoordinate])) {
      return $this->_dataValidationCollection[$pCellCoordinate];
    }

    // else create data validation
    $this->_dataValidationCollection[$pCellCoordinate] = new PHPExcel_Cell_DataValidation();
    return $this->_dataValidationCollection[$pCellCoordinate];
  }

  /**
   * Set data validation
   *
   * @param string $pCellCoordinate    Cell coordinate to insert data validation
   * @param    PHPExcel_Cell_DataValidation    $pDataValidation
   * @return PHPExcel_Worksheet
   */
  public function setDataValidation($pCellCoordinate = 'A1', PHPExcel_Cell_DataValidation $pDataValidation = null) {
    if ($pDataValidation === null) {
      unset($this->_dataValidationCollection[$pCellCoordinate]);
    }
    else {
      $this->_dataValidationCollection[$pCellCoordinate] = $pDataValidation;
    }
    return $this;
  }

  /**
   * Data validation at a specific coordinate exists?
   *
   * @param string $pCoordinate
   * @return boolean
   */
  public function dataValidationExists($pCoordinate = 'A1') {
    return isset($this->_dataValidationCollection[$pCoordinate]);
  }

  /**
   * Get collection of data validations
   *
   * @return PHPExcel_Cell_DataValidation[]
   */
  public function getDataValidationCollection() {
    return $this->_dataValidationCollection;
  }

  /**
   * Accepts a range, returning it as a range that falls within the current highest row and column of the worksheet
   *
   * @param string $range
   * @return string Adjusted range value
   */
  public function shrinkRangeToFit($range) {
    $maxCol = $this
      ->getHighestColumn();
    $maxRow = $this
      ->getHighestRow();
    $maxCol = PHPExcel_Cell::columnIndexFromString($maxCol);
    $rangeBlocks = explode(' ', $range);
    foreach ($rangeBlocks as &$rangeSet) {
      $rangeBoundaries = PHPExcel_Cell::getRangeBoundaries($rangeSet);
      if (PHPExcel_Cell::columnIndexFromString($rangeBoundaries[0][0]) > $maxCol) {
        $rangeBoundaries[0][0] = PHPExcel_Cell::stringFromColumnIndex($maxCol);
      }
      if ($rangeBoundaries[0][1] > $maxRow) {
        $rangeBoundaries[0][1] = $maxRow;
      }
      if (PHPExcel_Cell::columnIndexFromString($rangeBoundaries[1][0]) > $maxCol) {
        $rangeBoundaries[1][0] = PHPExcel_Cell::stringFromColumnIndex($maxCol);
      }
      if ($rangeBoundaries[1][1] > $maxRow) {
        $rangeBoundaries[1][1] = $maxRow;
      }
      $rangeSet = $rangeBoundaries[0][0] . $rangeBoundaries[0][1] . ':' . $rangeBoundaries[1][0] . $rangeBoundaries[1][1];
    }
    unset($rangeSet);
    $stRange = implode(' ', $rangeBlocks);
    return $stRange;
  }

  /**
   * Get tab color
   *
   * @return PHPExcel_Style_Color
   */
  public function getTabColor() {
    if ($this->_tabColor === NULL) {
      $this->_tabColor = new PHPExcel_Style_Color();
    }
    return $this->_tabColor;
  }

  /**
   * Reset tab color
   *
   * @return PHPExcel_Worksheet
   */
  public function resetTabColor() {
    $this->_tabColor = null;
    unset($this->_tabColor);
    return $this;
  }

  /**
   * Tab color set?
   *
   * @return boolean
   */
  public function isTabColorSet() {
    return $this->_tabColor !== NULL;
  }

  /**
   * Copy worksheet (!= clone!)
   *
   * @return PHPExcel_Worksheet
   */
  public function copy() {
    $copied = clone $this;
    return $copied;
  }

  /**
   * Implement PHP __clone to create a deep clone, not just a shallow copy.
   */
  public function __clone() {
    foreach ($this as $key => $val) {
      if ($key == '_parent') {
        continue;
      }
      if (is_object($val) || is_array($val)) {
        if ($key == '_cellCollection') {
          $newCollection = clone $this->_cellCollection;
          $newCollection
            ->copyCellCollection($this);
          $this->_cellCollection = $newCollection;
        }
        elseif ($key == '_drawingCollection') {
          $newCollection = clone $this->_drawingCollection;
          $this->_drawingCollection = $newCollection;
        }
        elseif ($key == '_autoFilter' && $this->_autoFilter instanceof PHPExcel_Worksheet_AutoFilter) {
          $newAutoFilter = clone $this->_autoFilter;
          $this->_autoFilter = $newAutoFilter;
          $this->_autoFilter
            ->setParent($this);
        }
        else {
          $this->{$key} = unserialize(serialize($val));
        }
      }
    }
  }

  /**
   * Define the code name of the sheet
   *
   * @param null|string Same rule as Title minus space not allowed (but, like Excel, change silently space to underscore)
   * @return objWorksheet
   * @throws PHPExcel_Exception
   */
  public function setCodeName($pValue = null) {

    // Is this a 'rename' or not?
    if ($this
      ->getCodeName() == $pValue) {
      return $this;
    }
    $pValue = str_replace(' ', '_', $pValue);

    //Excel does this automatically without flinching, we are doing the same

    // Syntax check
    // throw an exception if not valid
    self::_checkSheetCodeName($pValue);

    // We use the same code that setTitle to find a valid codeName else not using a space (Excel don't like) but a '_'
    if ($this
      ->getParent()) {

      // Is there already such sheet name?
      if ($this
        ->getParent()
        ->sheetCodeNameExists($pValue)) {

        // Use name, but append with lowest possible integer
        if (PHPExcel_Shared_String::CountCharacters($pValue) > 29) {
          $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 29);
        }
        $i = 1;
        while ($this
          ->getParent()
          ->sheetCodeNameExists($pValue . '_' . $i)) {
          ++$i;
          if ($i == 10) {
            if (PHPExcel_Shared_String::CountCharacters($pValue) > 28) {
              $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 28);
            }
          }
          elseif ($i == 100) {
            if (PHPExcel_Shared_String::CountCharacters($pValue) > 27) {
              $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 27);
            }
          }
        }
        $pValue = $pValue . '_' . $i;

        // ok, we have a valid name

        //codeName is'nt used in formula : no need to call for an update

        //return $this->setTitle($altTitle,$updateFormulaCellReferences);
      }
    }
    $this->_codeName = $pValue;
    return $this;
  }

  /**
   * Return the code name of the sheet
   *
   * @return null|string
   */
  public function getCodeName() {
    return $this->_codeName;
  }

  /**
   * Sheet has a code name ?
   * @return boolean
   */
  public function hasCodeName() {
    return !is_null($this->_codeName);
  }

}

Classes

Namesort descending Description
PHPExcel_Worksheet PHPExcel_Worksheet